title: [The development of the human lingual tonsil in the prenatal period].
abstract: Morphofunctional regularities in the development of the lingual tonsil were examined in 120 human embryos and fetuses of gestation age of 5 weeks to 9 months with the use of a complex of histologic and injection methods and transmission electron microscopy. Lingual tonsil development was found to start at gestation age of 9 weeks. By the end of gestation period the lingual tonsil represents a complex of cryptolymphatic units, each of them consisting of cryptal epithelial wall, lymphoid parenchyma, and connective-tissue capsule. The role of postcapillary venules with parafollicular zone high endothelium of lingual tonsil follicles is discussed.
authors.forename: O N
authors.initials: ON
authors.lastname: Alekseev
mesh_terms: D005865:Gestational Age; D006801:Humans; D008208:Lymphatic System / Q000196:embryology* / Q000648:ultrastructure; D008854:Microscopy, Electron; D009024:Morphogenesis; D009960:Oropharynx / Q000196:embryology; D014059:Tongue / Q000196:embryology* / Q000648:ultrastructure
vernacular_title: Razvitie iazychnoĭ mindaliny cheloveka v prenatal'nom periode.